Product Overview

The Bently Nevada 21000-00-00-00-110-04-02 is a heavy-duty external housing assembly engineered to provide a secure, explosion-proof mounting environment for proximity transducers. As a fundamental component of the 3300 Proximity Transducer System, this housing facilitates the external adjustment and protection of probes used to monitor shaft vibration and axial displacement. Its primary function is to shield sensitive sensors from harsh industrial atmospheres while allowing technicians to perform maintenance or gap adjustments without breaching the machine casing.

This specific configuration utilizes a 1.1-inch sleeve length (designated by the 110 suffix) and a 0.4-inch probe sleeve opening. Constructed from high-strength aluminum, it offers a balance of mechanical durability and lightweight installation, making it a standard choice for Turbine Supervisory Instrumentation (TSI) in mission-critical rotating machinery.

Technical Characteristics and Safety Features

The 21000 series is designed to meet stringent global safety standards for deployment in hazardous industrial zones.

• Explosion-Proof Integrity: Features dual 3/4-14 NPT explosion-proof fittings, ensuring the assembly meets safety requirements for Class I, Division 1 and Division 2 environments.

• Environmental Sealing: The threaded dome cover and precision O-rings provide an airtight and watertight seal, preventing the ingress of process fluids, oil, and dust that could compromise sensor signal quality.

• Modular Configuration: This assembly is supplied without a pre-installed probe or cable (00-00 designations), offering maximum flexibility for site engineers to integrate their preferred 3300 or 3300 XL proximity sensors.

• Optimized Sleeve Design: The 1.1-inch sleeve is precision-machined to ensure the probe remains rigid and vibration-free during operation, maintaining the linear accuracy of the transducer system.

• Rugged Aluminum Build: The housing is resistant to corrosion and thermal cycling, capable of withstanding the extreme temperatures and high-vibration conditions found on turbine decks and compressor sheds.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 21000-00-00-00-110-04-02

• Housing Type: External Proximity Probe Enclosure

• Material: Corrosion-resistant Aluminum

• Sleeve Length: 1.1 Inches (27.9 mm)

• Probe Sleeve Opening: 0.4 Inches

• Conduit Connection: Dual 3/4-14 NPT

• System Compatibility: 3300 and 3300 XL Proximity Systems

• Net Weight: 1.08 kg

• Standard Origin: USA

• Compliance: API 670 Standard for Machinery Protection

Industrial Applications

The 21000-00-00-00-110-04-02 is an essential hardware solution for predictive maintenance programs in the following sectors:

• Power Generation: Monitoring of large steam, gas, and hydro turbines.

• Oil and Gas: Protection for centrifugal compressors and high-pressure pumps.

• Chemical Processing: Safeguarding reactors and high-speed mixers.

• Heavy Manufacturing: Vibration analysis for large-scale electric motors and fans.